2 Corinthians 6:14

"Be ye not unequally yoked together with unbelievers." He said not, 'Intermix not with unbelievers,' but rather dealing sharply with them, as transgressing what was right, 'Suffer not yourselves to turn aside,' saith he, "For what fellowship have righteousness and iniquity?" Here in what follows he institutes a comparison, not between his own love and theirs who corrupt them, but between their nobleness and the others' dishonor. For thus his discourse became more dignified and more beseeming himself, and would the rather win them. Just as if one should say to a son that despised his parents, and gave himself up to vicious persons, 'What art thou doing, child? Dost thou despise thy father and prefer impure men filled with ten thousand vices? Knowest thou not how much better and more respectable thou art than they?' For so he detaches him more [readily] from their society than if he should express admiration of his father. For were he to say indeed, 'Knowest thou not how much thy father is better than they?' he will not produce so much effect; but if, leaving mention of his father, he bring himself before them, saying, 'Knowest thou not who thou art and what they are? Dost thou not bear in mind thine own high birth and gentle blood, and their infamy? For what communion hast thou with them, those thieves, those adulterers, those impostors?' by elevating him with these praises of himself, he will quickly prepare him to break off from them. For the former address indeed, he will not entertain with overmuch acceptance, because the exalting of his father is an accusation of himself, when he is shown to be not only grieving a father, but such a father; but in this case he will have no such feeling. For none would choose not to be praised, and therefore, along with these praises of him that hears, the rebuke becometh easy of digestion. For the listener is softened, and is filled with high thoughts, and disdains the society of those persons. But not this only is the point to be admired in him that thus he prosecuted his comparison, but that he imagined another thing also still greater and more astounding; in the first place, prosecuting his speech in the form of interrogation, which is proper to things that are clear and admitted, and then dilating it by the quick succession and multitude of his terms. For he employs not one or two or three only, but several. Add to this that instead of the persons he employs the names of the things, and he delineates here high virtue and there extreme vice; and shows the difference between them to be great and infinite so as not even to need demonstration. "For what fellowship," saith he, "have righteousness and iniquity?"